A quick check and warning about being a screen/tmux session would be nice.
http://serverfault.com/questions/257975/how-to-check-if-im-in-screen-session
It's the code up on githup or some equivalent somewhere? I'd like to contribute.
I'm seeing the same issue on a brand new unraid setup. I can enter a bash shell in the container and setup my ssh keyswaps just fine. Via the UI, no luck.